How popular is Darrylynn?

Darrylynn is a rare given name for females. Darrylynn is an equally unique surname for both adults and children. (2000 U.S. Census)

Which version is better?

with its source form and related girl names. Daryl is the only prominent variation form of Darrylynn (outside Top 2000) rated in the Top 2000. This relation of Darrylynn was popular in the 1950s (#848). (2015 U.S. SSA Records)